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Water Quality Samples for the Nation

! Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024
with a full decommission expected 6 months later. Learn more about the upcoming change and where to find the new samples data in our blog.

USGS 415604087505201 40N12E-27.1f1

Cook County, Illinois
Latitude  41°56'04", Longitude  87°50'52" NAD27
Land-surface elevation 645 feet above NGVD29
Site Type: Well
The depth of the well is 1,242 feet below land surface.

Period of record
Begin Date End Date Samples
1922-06-22 1943-01-01 2

 
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Samples and parameters to include:
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